[多选题]母线差动保护按母差保护差动回路中的阻抗分类，可分为(  )。(每题1分)

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69424' and id < 4495413 and id<>'4495413' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku_ where sourceid='69424' and id > 4495413 and id<>'4495413' order by id asc limit 5